Faint Object Spectrograph

The Faint Object Spectrograph (FOS) was one of the original 4 axial instruments on the Hubble Space Telescope (HST). The FOS, which was removed from HST during the Second Servicing Mission in February 1997, was used to make spectroscopic observations of astrophysical sources from the near ultraviolet to the near infrared (1150-8000 Angstroms).

Calibration Products and Tools

Document Archive

The FOS Museum

Send comments to <help@stsci.edu>